Instruction Manual
IB-106-5081, Rev. 1.0
May 2005
Rosemount Analytical Inc. A Division of Emerson Process Management Startup and Operation 3-1
Model 5081FG
SECTION 3STARTUP AND OPERATION
Install all protective equipment covers
and safety ground leads before
equipment startup. Failure to install
covers and ground leads could result
in serious injury or death.
3-1 GENERAL
a. Verify Mechanical Installation
Ensure the Two-Wire In Situ Oxygen Ana-
lyzer is installed correctly. See paragraph
2-2 for mechanical installation information.
b. Verify Terminal Block Wiring
Ensure the wiring of both the oxygen probe
terminal block and Model 5081 Transmitter
terminal block is correct. Refer to paragraph
2-3 for electrical installation and wiring
information.
3-2 POWER UP
a. General
The Two-Wire In Situ Oxygen Analyzer dis-
plays the current oxygen reading on the
LCD face of the Model 5081 Transmitter.
The O2 concentration, cell temperature, and
4-20 mA output current are displayed as
shown in Figure 3-1. This and other infor-
mation may also be accessed using
HART/AMS.
b. Startup Display
When the probe is first inserted into the
stack, some time is required until minimum
operating temperatures [550°C (1022°F)]
are reached. Some time is also required for
the electronics to reach an operating state.
Therefore, when the unit is first powered up,
a faulted operation display as shown in Fig-
ure 3-2 may be displayed by the transmitter
until the probe operating temperatures are
reached and the electronics are working
properly (approximately 5 minutes).
c. Operating Display
After the probe has reached operating
temperatures, the Model 5081 Transmitter
display should look similar to Figure 3-1.
The display will now track the O2 concentra-
tion, cell temperature, and 4-20 mA output
current.
%
mA
4-20mA OUTPUT
26020007
O CONCENTRATION
2
CELL
TEMPERATURE
Figure 3-1. Normal Operation Display
%
mA
26020008
Figure 3-2. Faulted Operation Display
3